diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-22 20:58:41 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 09:39:34 -0200 |
| commit | 14983d8163c78826386404b27ee5bfc72e25a9d4 (patch) | |
| tree | 4d014366e77ae1c010d8610fb499e672d959243a /drivers/media/video/em28xx/em28xx-video.c | |
| parent | bc97430510960846b6e8f2d62c503653031991e1 (diff) | |
V4L/DVB (9970): em28xx: Allow get/set registers for debug on i2c slave chips
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-video.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 4ea4920c927a..b5ea18e12290 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -39,6 +39,7 @@ #include "em28xx.h" #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> +#include <media/v4l2-chip-ident.h> #include <media/msp3400.h> #include <media/tuner.h> @@ -1214,6 +1215,21 @@ static int em28xx_reg_len(int reg) } } +static int vidioc_g_chip_ident(struct file *file, void *priv, + struct v4l2_chip_ident *chip) +{ + struct em28xx_fh *fh = priv; + struct em28xx *dev = fh->dev; + + chip->ident = V4L2_IDENT_NONE; + chip->revision = 0; + + em28xx_i2c_call_clients(dev, VIDIOC_G_CHIP_IDENT, chip); + + return 0; +} + + static int vidioc_g_register(struct file *file, void *priv, struct v4l2_register *reg) { @@ -1221,7 +1237,8 @@ static int vidioc_g_register(struct file *file, void *priv, struct em28xx *dev = fh->dev; int ret; - if (reg->match_type == V4L2_CHIP_MATCH_AC97) { + switch (reg->match_type) { + case V4L2_CHIP_MATCH_AC97: mutex_lock(&dev->lock); ret = em28xx_read_ac97(dev, reg->reg); mutex_unlock(&dev->lock); @@ -1230,11 +1247,18 @@ static int vidioc_g_register(struct file *file, void *priv, reg->val = ret; return 0; - } - - if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) + case V4L2_CHIP_MATCH_I2C_DRIVER: + em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_REGISTER, reg); + return 0; + case V4L2_CHIP_MATCH_I2C_ADDR: + /* Not supported yet */ return -EINVAL; + default: + if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) + return -EINVAL; + } + /* Match host */ if (em28xx_reg_len(reg->reg) == 1) { mutex_lock(&dev->lock); ret = em28xx_read_reg(dev, reg->reg); @@ -1267,14 +1291,25 @@ static int vidioc_s_register(struct file *file, void *priv, __le64 buf; int rc; - if (reg->match_type == V4L2_CHIP_MATCH_AC97) { + switch (reg->match_type) { + case V4L2_CHIP_MATCH_AC97: mutex_lock(&dev->lock); rc = em28xx_write_ac97(dev, reg->reg, reg->val); mutex_unlock(&dev->lock); return rc; + case V4L2_CHIP_MATCH_I2C_DRIVER: + em28xx_i2c_call_clients(dev, VIDIOC_DBG_S_REGISTER, reg); + return 0; + case V4L2_CHIP_MATCH_I2C_ADDR: + /* Not supported yet */ + return -EINVAL; + default: + if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) + return -EINVAL; } + /* Match host */ buf = cpu_to_le64(reg->val); mutex_lock(&dev->lock); @@ -1927,6 +1962,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = { #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, + .vidioc_g_chip_ident = vidioc_g_chip_ident, #endif #ifdef CONFIG_VIDEO_V4L1_COMPAT .vidiocgmbuf = vidiocgmbuf, |